Internal-combustion engine.



, #E H n# Patented Apr. 17, 1917*.

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INTERNAL COMBUSTION ENGINE.`

APPLICATION man APR. 11. m5.

1,223,260. Patented Apr. 17, 1917.

2 SHEETS-SHEET 2.

UNITED sTATEs MADERsoN A. cnnwro nn, or cLIo, LOUISIANA.

.INTERNAL-COMBUSTION ENGINE.

To all whom t may concern.'

Be it known that I, MADERsoN ALFRED CRAWFORD, a citizen of the UnitedStates, residing at Clio, in the parish of Livingston and State of Louisiana,.have invented certain new and useful Improvements in Internal-Combustion Engines; and I do hereby declare the following to bel a full, clear, andexact description o as .will enable others skilled in'the art to which it appertains to make and use the same.

This invention relates to engines, and more particularly to engines of the internal combustion type. v

The -invention has'for its primary object to generally improve and simplify the construction of internal combustion engines, and render the same highly eflicient in use.

Another object is to provide novel and etlicientmeans for regulating the speed of the engine includin means for automatically locking the ignition controlling or timing mechanismin inoperative position.

VVith'these and other objects in view,}.tl ie invention consists in the novel construction;

arrangement and formation of parts as will Specication of Letters Patent.

the invention, such Patented Apr. 17, 191 *7.

p Application led April 17, 1915.v Serial lNo. 22,165.

shaftj12 iS-rotatably supported in a bearing block 13 securedbetween the free and Oifset ends 14 of the guides 11, and the shaft is supported adjacentits .opposite end in a suitable bearing 15 securedv to the base 5. A crank pin 16 is secured'eccentrically to a disk 17 carried by one end of the shaft 12 and is connected with the cross head 10 by a rod 18.

The engine is ofthe double acting type and is formed at its opposite ends`orheads with exhaust ports 20 connected with the exhaust pipe 21 and controlled by outwardlyclosing exhaust valves 22, which are normally retained in closed position by the tension of springs 23 coiled about the stems 24 thereof. The exhaust valves' 22 are automatically opened to exhaust the products of combustion from the explosion chambers at the opposite ends of the cylinder 6 by a |valve operating mechanism designated generallyby the numeral 25 and including a .slide barv 26 supported in .brackets 27 se-Y cured tol the base 5 and connected with the L.. cross head 10 by a laterally projecting arm '5.528 thereof. -A pair 'of spaced arms 29 are .'adjustablyfsecured upon the slide rod 26 be hereinafter specically described, claimedfand are adapted to engage the valve stems and illustrated in the accompanying draw-y ing, in which:

Figure 1 represents a side elevation of the improved engine.

2-represents a top plan view of the engine, illustrating vthe cylinder in horizontal section.

Fig. 3 represents an enlarged detail sectional view, partly broken away, of the electrical ignition mechanism, and

Fig. 4 represents a detail sectional View on the line 4 4 of Fig. 3.

Referring to the drawing in detail, wherein similar reference numerals designate corresponding parts throughout A.the sever'al views, the numeral 5 indicates a suitable base upon one end of which is supported the cylinder 6 slidably receiving the reciprocating piston 7 composed of a plurality' of plates shaped conformably with the interior of the cylinder and separated by layers of asbestos or other suitable packing 8 designed to render the piston leak-proof. A piston rod 9 is secured to the piston 7, projects outwardly through an aperture'formed in the inner head of the cylinder and'is connected with a cross head 10 slidable longitudinally between guides 11.` One end of a crank 24 to automatically open thevalves 22 to permit of the exhaust of the products of combustion. The side wall'of. the cylinder 6 .ata point diametrically opposite the exhaust ports 20 is forlned with a pair of intake ports connected with a fuel intake pipe 30 and controlled by a pair of outwardly closing check valves.

lAn eccentric 32 is keyed upon the crank shaft 12 intermediate the bearings 13 and 15 and is connected with a slide rod 33 supported in brackets 34 carried by the base 5 by a connecting rod 35 and ring 36 'secured to one end thereof and inclosing the eccentric 32, whereby the guide rod 33 is reciprocated during the rotary motion of the crank shaft. 'A second slide rod 37 is supported above the base plate 5 and in alinement with the rod 33 in brackets 38 and 4is normally retained in engagement with the rod 33 by the tension of a spring 39.

A pair of spaced spring contacts 40A are secured to the base 5 laterally of the slide rod 37 and are connected with one of the electrodes of spark plugs 41 secured inl the opposite ends or heads of the cylinder l6. A pair of contact' pins' 43 are secured in spaced relation to the. slide rod v37 and are adapted to engage the spring contacts 40 during reciprocation of the rod to close the contact 40 and conductor 42. The opposite poles of the batteries 44 are grounded in the cylinder 6 by conductors 46.

A centrifugal governor designated gen.

erally by the numeral 48 is operably connected with thecrank shaft 12 through a belt 49 and bevel gear wheels 50. The governor includes a rotatable frame 51, in which are pivoted a pair of depending arms 52, carrying weights 53 at their lower extremi-y ties, adapted to be swung outwardly by centrifugal force during the operation of the engine. The arms 52 are provided with angular extensions 54 engaging the upper extremity of a vertically slidable rod 5 5 slidably mounted upon a frame 58 secured to the base 5. The rod 55 is normally. retained in elevated(positionby the tension of a spring 57 secured at one end to the frame 58 and at the opposite end to a pivoted latch member 59 upon which the rod 55 is supported. The latch member 59 is normally retained in spaced relation above the slide rod 37 by the spring 57, andis adapted, when the engine exceeds a predetermined speed to be depressed by the vertically movable rod 55, which latter is controlled by the governor 48 so as to engage 'said latch member in a notch 60 formed in the slide rod 37 and thus lock the latter in inoperative position, as illustrated in Fig; 3. In this position, it is evident that one of the contact .able rod 55 and latch member 59 to move upwardly under the influence of the spring 57 so as to release the slide rod 37 and permit the engine to continue its operation.

- What I claim is:

l. In an internal combustion engine, a pair of spring contacts, a base supporting said contacts, a slide rod, a pair of spaced contact pins carried by said rod adapted to alternately engage said spring contacts, a crank shaft, driving connections between said crank shaft and said rod, a centrifugal governor connected with said crank shaft, a pivoted latch member movable against the slide rod for locking the latter in -inoperative position, and a vertically movable rod operable by said governor for automatically actuating the latch to lock the slide rod against operation.

2.' In an internal combustion engine, a supporting base, a pair of spring contacts supportedupon said base, a slide rod, a pair of spaced contact pins carried by said slide rod adapted to alternately engage the springl contacts, a-second slide rod supported upon said base and engaged with the first-mentioned slide rod, a crank shaftsupported upon the base, means connecting the crank shaft with the second-mentioned slide rod,-

brackets supporting the slide rods, a frame supported upon said base, a pivoted latch member supported by the frame and movable against the first-mentioned slide rod to lock the latter in inoperative position, means normally retaining the latch member in inoperative position, a centrifugal governor,

means connecting said governor with said crank shaft, and a depressible rod associated with the governor and movable against the latch member to move the latter to operative position.

In testimony whereof I ailix my signature in presence of two witnesses.

MADERSON A. CRAWFORD.

, Witnesses:

J. D. PARKER, N. O. SHARP. 

